With this rule you would supersede the existing Pathfinder rule that you would need a Full Round Action to preform multiple attacks on a target regardless of your BAB. With this rule you would be able to use multiple attacks based on your BAB with just a standard action. The one stipulation is that each attack for that round must be with the same weapon.
In addition with a Full Round Action, if you had a high enough BAB for multiple attacks then you can draw a new weapon as a free action [Quick Draw Feat] as long as you dropped your existing weapon. Which means it would take a standard action to pick it up. This would allow you to attack with two different weapons in a Full Round Action.